South East Asia with a baby

Hey folk,

Looking for suggestions for 4 day stop over when traveling from Jakarta to Brisbane. Thinking Singapore, but open to suggestions.

I’m travelling from Australia to Bandung (Indonesia) to visit my brother in-law and his family who are posted there for work. I’ll be travelling with my partner and 1yo. We want to explore a city on our way back to make the most of travel.

Singapore seems kid friendly, safe and an easy enough stop. Only apprehension is that it will be expensive. Anywhere else people would recommend? Is Jakarta worth checking out? I figure we could be poor in Singapore or rich in Jakarta. Which would be better?

Open your suggestions.